XR21B1422IL40-0A Datasheet, PDF (4/60 Pages) Exar Corporation – Enhanced 2-Ch Full-Speed USB UART

Pin Configuration
XR21B1422
GPIOA8/TXTA 1
GPIOA9/RXTA 2
NC 3
NC 4
GND 5
USBD+ 6
USBD- 7
VIO 8
VCC 9
VCC_REG 10
Exar
XR21B1422
E_PAD
30 GPIOB0/RIB#/RWKB#
29 GPIOB1/CDB#
28 GPIOB2/DSRB#
27 GPIOB3/DTRB#
26 GPIOB4/CTSB#
25 GND
24 VIO
23 GPIOB5/RTSB#/RS485B
22 RXB
21 TXB
© 2014 Exar Corporation
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exar.com/XR21B1422
Rev 1A